Our 3-step plan to fight your DUI charge

Here’s how we’ll approach your case:

1. Act fast to protect your rights

Types of DUI cases we handle

We defend clients against all types of DUI charges, each with unique challenges and consequences:

First-time DUI offenses: This means you've never had a DUI before. In Illinois, it's usually a Class A misdemeanor with up to one year in jail, fines up to $2,500, and a minimum one-year license suspension.

‍Multiple/repeat DUI charges: This means you've had one or more DUIs in the past. A second DUI is still a misdemeanor but has mandatory jail time. A third DUI becomes a felony with possible prison time.

‍Aggravated DUI cases: This is a more serious type of DUI that happens when certain factors are present, like a very high BAC (over 0.16%), driving with kids in the car, or causing serious injuries. It's usually charged as a felony.

‍DUI with injury or property damage: This happens when you're charged with DUI and also caused an accident that hurt someone or damaged property. These cases often include extra charges and possible civil lawsuits.

‍DUI involving prescription medications: This means being charged with DUI because of legal medications that made you unsafe to drive. Even if your doctor prescribed the medication, you can still be charged if it impaired your driving.

‍Drug-related DUI charges: This means being charged with driving while impaired by illegal drugs or marijuana. Illinois has a "zero tolerance" policy for certain drugs, meaning any amount in your system can lead to charges.

‍Underage DUI (Zero Tolerance): If you're under 21, any amount of alcohol in your system while driving can result in a DUI charge. The legal limit doesn't matter - any alcohol at all can get you charged.

‍Commercial driver's license (CDL) DUI: This affects truck drivers and others who drive for work. The legal limit is lower (0.04% BAC instead of 0.08%), and penalties include losing your CDL for at least one year.

‍Out-of-state license holders charged in Illinois: This means you were visiting or passing through Illinois when charged with DUI. You'll face Illinois penalties and possibly additional consequences in your home state.

DUI success stories

Our track record speaks for itself. Here are just a few examples of how we've helped clients facing DUI charges:
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Case dismissed due to improper traffic stop
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"After being pulled over and charged with DUI in DuPage County, I was facing license suspension and potential jail time. Mike immediately identified issues with how the traffic stop was conducted. He filed a motion to suppress that the judge granted, and my entire case being dismissed. His knowledge as a former prosecutor made all the difference in spotting what others might have missed. I can't recommend McMahon Law Offices enough."
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Reduced charges and minimal consequences
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"I made the mistake of driving after having a few drinks at a work event in Oak Brook. When I was arrested for DUI, I thought my career was over. Michael McMahon took the time to explain all my options and worked hard to negotiate with the prosecutor. Instead of a DUI conviction, I ended up with reduced charges, minimal fines, and was able to keep my license with restrictions. The outcome exceeded my expectations, and I'm grateful for the personalized attention I received."
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Judge Pierce's courtroom knowledge made the difference
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"Having Judge Pierce on my defense team was invaluable. He knew exactly what the judge in my DUI case would be looking for and helped me prepare accordingly. His suggestion that I complete alcohol education classes before my court date significantly impacted the outcome. The prosecutor offered a much better deal than I expected, and Judge Pierce knew exactly how to present it to the court. His experience on the bench definitely gives this firm an edge."‍

Frequently asked questions about DUI in Illinois

Will I lose my license after a DUI arrest?

Yes, in most cases. After a DUI arrest, your license is usually suspended for 6 months if you failed the breath test or 12 months if you refused it. This suspension starts 46 days after your arrest. We can fight this suspension or help you get a permit to drive to work.

How much does a DUI lawyer cost?

Most DUI cases cost between $1,500 and $5,000 for legal fees, depending on how complex your case is and if it goes to trial. First-time DUIs are typically less expensive to defend than repeat offenses. We offer payment plans to make quality representation affordable.

What penalties will I face for a first DUI in Illinois?

A first DUI is usually punished with up to one year in jail, fines up to $2,500, a one-year license suspension, mandatory alcohol classes, and possible probation. With good legal representation, many first-time offenders can get court supervision instead of a conviction.

Can you get my DUI case dismissed?

Sometimes, yes. We've had many DUI cases dismissed because of problems like illegal traffic stops, improperly conducted field sobriety tests, or mistakes with breath testing equipment. Every case is different, and we'll examine yours carefully for these issues.

Do I need a lawyer if I plan to plead guilty?

Yes. Even if you think you're guilty, a good lawyer can often get your charges or penalties reduced. We may find issues with your case you're not aware of, and we can negotiate for better outcomes than you'd get on your own.

How long will my DUI case take to resolve?

Most first-time DUI cases take about 3-6 months to resolve. More complex cases or those going to trial may take 6-12 months. Throughout this time, we'll handle court appearances and keep you informed of progress.

Will a DUI affect my job or future employment?

It might. Some employers check driving records or criminal backgrounds. Certain jobs, especially those involving driving or professional licenses, can be affected by a DUI. We work to minimize these impacts by fighting for reduced charges whenever possible.

What's the difference between court supervision and a conviction?

Court supervision means you complete certain requirements (like classes or community service), and if successful, you avoid a conviction on your record. A conviction stays on your record permanently and results in automatic license revocation.

Can I drive after a DUI arrest?

Not immediately. Your license is automatically suspended 46 days after arrest. However, we can help you apply for a Monitoring Device Driving Permit (MDDP), which allows you to drive with a breath device installed in your car.

Should I take the field sobriety tests if stopped for DUI?

These tests are voluntary, and many people perform poorly on them even when sober. They're designed to collect evidence against you. You can politely decline these tests, though this may lead the officer to arrest you based on other observations.

Areas we serve for DUI defense

Our Oak Brook DUI defense attorneys represent clients throughout:
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DuPage County
‍Naperville, Oak Brook, Aurora, Wheaton, Downers Grove, Elmhurst, Lombard, Carol Stream, Addison, Glen Ellyn, Hinsdale, Clarendon Hills, Villa Park, Bensenville, Woodridge, Lisle, Oakbrook Terrace, Itasca, Willowbrook, Winfield.

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Kane County
‍Aurora, Elgin, St. Charles, Geneva, Batavia, North Aurora, South Elgin, Carpentersville, West Dundee, East Dundee, Sugar Grove, Hampshire, Algonquin, Burlington, Pingree Grove, Campton Hills, Big Rock, Maple Park, Huntley, Montgomery.
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Cook County
‍Chicago, Schaumburg, Arlington Heights, Evanston, Palatine, Hoffman Estates, Des Plaines, Oak Lawn, Mount Prospect, Orland Park, Western Springs, La Grange, Cicero, Oak Park, Tinley Park, Berwyn, Skokie, Northbrook, Glenview, Park Ridge.

Why choose our Oak Brook DUI attorneys?

Insider knowledge
With over 40 combined years of experience, our team includes former prosecutors and even a former judge who now use their insider knowledge to fight for you. We know how the other side thinks because we've been there.
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Local court expertise
Our attorneys appear regularly in the courthouses of DuPage, Kane, and Cook County. We understand the nuances of each jurisdiction and how to navigate their specific procedures effectively.
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Straight talk, no empty promises
‍We won't sugarcoat things or make unrealistic promises. When you work with McMahon Law Offices, you'll get the straight facts about your situation, clear options for moving forward, and attorneys who actually listen to your concerns.

Available 24/7
Because DUI arrests don't wait for business hours, neither do we. Our team is available around the clock to respond to your emergency legal needs.

Contact our Oak Brook DUI defense attorneys

When facing criminal charges in DuPage, Kane, or Cook County, time is of the essence. Early legal intervention can make a crucial difference in the outcome of your case.

‍Call: (630) 953-4400
‍Email: info@mcmahonlegal.net
‍Visit: 2150 McDonald Drive, Oak Brook, IL 60523

‍Available 24/7 for emergency legal assistance

‍Don't face criminal charges alone. Our experienced Oak Brook criminal defense attorneys are ready to fight for your rights, your reputation, and your future.